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Science News for October 13, 2011


Mile End chic under study

The study found that Mile End's unique blend of industrial architecture, cultural diversity, and public spaces draws designers to the area. However, gentrification concerns arise as heritage preservation efforts and rising rents threaten the neighbourhood's character.

Children prefer cooperation

Research suggests that human children exhibit a strong preference for working together to solve problems, with cooperation rates exceeding 78% compared to 58% for chimpanzees. This finding highlights a potential difference in motivation between humans and our primate cousins.

SourceMax-Planck-Gesellschaft·JournalCurrent Biology·DateOct 13, 2011

Lower income dads active in their kids' health

A study from Northwestern University found that lower-income urban dads are involved in their children's health and encourage exercise and healthy eating, but also face challenges in handling emergency medical care. Fathers reported modeling behavior for their kids, such as exercising and playing, to promote healthy habits.

SourceNorthwestern University·JournalPsychology of Men & Masculinity·DateOct 13, 2011

Tiny fossil fragment reveals giant-but-ugly-truth

A small fossil fragment at London's Natural History Museum has been identified as part of the world's largest toothed pterosaur, reaching a wingspan of up to 7 meters. The discovery provides insight into patterns of evolution among extinct groups and sheds light on why some species achieved giant sizes.

SourceUniversity of Leicester·JournalCretaceous Research·DateOct 13, 2011

Scripps Research scientists reveal surprising picture of how powerful antibody neutralizes HIV

Researchers have discovered a highly effective antibody that can neutralize approximately 70% of globally circulating HIV strains by targeting the virus's envelope protein. The new findings suggest a promising target for AIDS vaccine development, with potential implications for broadening the protection against the fast-mutating virus.

SourceScripps Research Institute·JournalScience·DateOct 13, 2011

US Army awards $1.5 million for sleep research

The US Army has awarded a $1.5 million cooperative research agreement to Virginia Tech's Arlington Innovation Center for neuroimaging studies of human performance and sleep regulation. The project aims to use advanced imaging techniques to better understand the brain's role in sleep, stress, and mood.

Experimental mathematics

The article discusses how modern computer technology has expanded the ability to discover new mathematical results, enabling the exploration of complex patterns and relationships. Computer simulations have been used to explore various mathematical problems, including Giuga's Conjecture, providing empirical evidence in favor of its truth.

SourceAmerican Mathematical Society·JournalNotices of the American Mathematical Society·DateOct 13, 2011

Miscarriage diagnosis guidelines questioned

Research published in Ultrasound in Obstetrics and Gynecology found that current definitions for miscarriage diagnosis can lead to incorrect diagnoses. The studies also revealed a 20% variation in gestational sac sizes reported by different clinicians, which can cause false conclusions about pregnancy growth.

SourceWiley·JournalUltrasound in Obstetrics and Gynecology·DateOct 13, 2011

In teen drinking it's not who you know, it's who knows who you know

A study published in American Sociological Review found that teenage drinking habits are influenced more by their date's friends than their own. The presence of prior drinking among the friend increases the odds of future binge drinking by 80%, while the date's drinking habits have a lower impact, increasing binge drinking by 32%.

SourcePenn State·JournalAmerican Sociological Review·DateOct 13, 2011

Preventing dangerous nonsense in human gene expression

Researchers identified a strategy of prevention that has evolved to compensate for the inefficiency of NMD by decreasing the frequency of nonsense errors. Human genes preferentially encode codons less likely to be mistranscribed into premature STOP codons, improving robustness to transcriptional errors.

SourcePLOS·JournalPLOS Genetics·DateOct 13, 2011

Researchers block morphine's itchy side effect

Researchers at Washington University School of Medicine have identified a specific variant of the opioid receptor that mediates itch and found a way to block it without interfering with pain relief. This breakthrough discovery has significant implications for treating opioid-induced itching in cancer, surgery, and chronic pain patients.

SourceWashU Medicine·JournalCell·DateOct 13, 2011

Robot biologist solves complex problem from scratch

A team of scientists has successfully demonstrated a computer's ability to analyze raw experimental data from a biological system and derive the basic mathematical equations that describe its operation. This achievement marks one of the most complex scientific modeling problems solved completely from scratch by a computer.

SourceVanderbilt University·JournalPhysical Biology·DateOct 13, 2011

Children, not chimps, choose collaboration

A study published in Current Biology found that human children consistently chose to cooperate with others over working alone, whereas chimpanzees showed no such preference. The researchers suggest that this behavioral difference may be rooted in small motivational differences between humans and other species.

SourceCell Press·JournalCurrent Biology·DateOct 13, 2011

USDA research demonstrates new breeds of broccoli remain packed with health benefits

A recent USDA study reveals that new varieties of broccoli retain the same levels of calcium, copper, iron, and other minerals as older cultivars, despite significant improvements in quality. The research suggests that breeders can rely on these nutrient levels when developing future broccoli strains.

Emulating -- and surpassing -- nature

Researchers at Northwestern University have developed a method to build crystalline materials from nanoparticles and DNA, allowing for the creation of new materials with predictable physical properties. The design rules enable controlled crystallization, resulting in a variety of structures with unique properties.

SourceNorthwestern University·JournalScience·DateOct 13, 2011

Controlling cell death prevents skin inflammation

A new study published in Immunity reveals that preventing necroptosis in keratinocytes is crucial for preventing skin inflammation. The research found that sensitization of keratinocytes to RIP3-mediated cell death triggers skin inflammation, which could be linked to various chronic or acute skin conditions.

SourceCell Press·JournalImmunity·DateOct 13, 2011

Breast tenderness in women getting combo hormone therapy associated with increase in breast density

Post-menopausal women experiencing new onset breast tenderness after starting combination hormone therapy may have an increased risk of breast cancer compared to those without breast tenderness. Higher breast density is associated with a higher risk of breast cancer, with extremely dense breasts posing a four to six times higher risk.

SourceUniversity of California - Los Angeles Health Sciences·JournalBreast Cancer Research and Treatment·DateOct 13, 2011

Brain scans reveal drugs' effects on attention

Researchers developed a brain scan method to quickly test whether drugs increase dopamine levels, alleviating attention deficits in mice with neurofibromatosis type 1. The technique may lead to matching specific treatments to patients with NF1 and attention deficit disorders.

SourceWashU Medicine·JournalExperimental Neurology·DateOct 13, 2011

Hospital superbug debugged

A global team of scientists has identified a natural mutation in Clostridium difficile that causes the bacterium to produce hypervirulent strains resistant to antibiotics, leading to severe bowel infections.

SourcePLOS·JournalPLOS Pathogens·DateOct 13, 2011

Taking steps to prevent 'going postal'

A new study proposes using a theory called awareness development to assess employees' responses to situations and help HR departments craft effective workplace violence policies. Most organizations fall into the intellectualization stage, indicating limited awareness of workplace violence issues.

SourceSAGE·JournalAdvances in Developing Human Resources·DateOct 13, 2011

Regaining trust after a transgression

A recent study by researchers at USC and other universities found that substantive efforts to repair trust, such as apologies and commitments to reform, are critical in regaining trust. The study showed that nothing beats showing true contrition in winning back trust.

SourceUniversity of Southern California·JournalOrganizational Behavior and Human Decision Processes·DateOct 13, 2011

Twitter data used to track vaccination rates and attitudes

A Penn State University study analyzed tweets about the H1N1 vaccine to track vaccination rates and attitudes. The research found patterns that correlate vaccination rates with geographic location and sentiment trends over time. This analysis could be used strategically to develop targeted public health initiatives.

SourcePenn State·JournalPLOS Computational Biology·DateOct 13, 2011

A new scheme for photonic quantum computing

A new scheme, 'coherent photon conversion', offers a method for coherent conversion between different photon states using a strong laser field. This approach promises to solve open challenges in optical quantum computation and lead to the development of a nonlinear optical quantum computer.

SourceUniversity of Vienna·JournalNature·DateOct 13, 2011

Penn team links schizophrenia genetics to disruption in how brain processes sound

A Penn team has identified a key connection between genetic risk factors for schizophrenia and altered sound processing in the brain. By studying mice with a mutated dysbindin gene, they found reduced activity in specific nerve cells that control fast brain activity, leading to symptoms of schizophrenia.

SourceUniversity of Pennsylvania School of Medicine·JournalProceedings of the National Academy of Sciences·DateOct 13, 2011